#6D51BB
Closest named color: Iris (#6258C4). oklch(51.8% 0.16 292), rgb(109, 81, 187).
Aa
White text reads best on this color (5.92:1).
About this color
#6D51BB is a medium-dark, vivid purple. In OKLCH its lightness is 52%, its chroma 0.160 and its hue 292°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.026 away. White text reads best on it, at 5.92:1.
| Hue family | Purples |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.160) |
| Temperature | in between |
| Nearest name | Iris (#6258C4) |
| Black text | 3.54:1 |
| White text | 5.92:1 |
Values
| HEX | #6D51BB |
| RGB | rgb(109, 81, 187) |
| HSL | hsl(256, 44%, 53%) |
| OKLCH | oklch(51.8% 0.16 292) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #6D51BB | 5.92:1 | AA | Lc -84.5 | Fine for body text |
| Black text on #6D51BB | 3.54:1 | AA large text | Lc 24.7 | Dividers and decoration only |
| #6D51BB text on white | 5.92:1 | AA | Lc 79.3 | Fine for body text |
| #6D51BB text on black | 3.54:1 | AA large text | Lc -22.5 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 700.
-
Step 50
50
#F5F4FC
oklch(97% 0.011 292)
-
Step 100
100
#EAE7F8
oklch(93.5% 0.023 294.1)
-
Step 200
200
#D9D5F4
oklch(88.6% 0.042 291.4)
-
Step 300
300
#C1B8EF
oklch(80.9% 0.077 292.1)
-
Step 400
400
#A291E7
oklch(70.6% 0.124 292)
-
Step 500
500
#8D74E0
oklch(63.1% 0.158 291.9)
-
Step 600
600
#785ACE
oklch(55.7% 0.172 291.8)
-
Step 700
700 (this color)
#6D51BB
oklch(51.8% 0.16 292)
-
Step 800
800
#533C90
oklch(42.7% 0.133 292.5)
-
Step 900
900
#443573
oklch(37.8% 0.103 291.9)
-
Step 950
950
#281F43
oklch(27% 0.065 293)
#6D51BB with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #1666BF | 0.100 |
| Deuteranopia (no green cones) | #1F62B9 | 0.096 |
| Tritanopia (no blue cones) | #58687E | 0.130 |
| Achromatopsia (no color) | #646464 | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6D51BB
#6D51BB
oklch(51.8% 0.16 292)
- #6B6E00
#6B6E00
oklch(51.8% 0.114 111.7)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #6D51BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.026
- Slate Blue #6A5ACD ΔE 0.033
- Light Indigo #6D5ACF ΔE 0.036
- Dark Periwinkle #665FD1 ΔE 0.045
- Bluey Purple #6241C7 ΔE 0.046
- Deep Lavender #8D5EB7 ΔE 0.068
- Blue With A Hint Of Purple #533CC6 ΔE 0.070
- Warm Blue #4B57DB ΔE 0.070
Use #6D51BB in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.